基于改进内点法的电热联合系统优化研究  

Research on the optimization algorithm of the electricthermal combined system based on the improved interior point method

作　　者：陈晓 谭志海[2] 平原 刘兴艳 李玉芬 CHEN Xiao;TAN Zhihai;PING Yuan;LIU Xingyan;LI Yufen(Guian Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Guian 550025 Guizhou,China;Beijing Sifang Automation Co.,Ltd.,Beijing 100085,China)

机构地区：[1]贵州电网有限责任公司贵安供电局,贵州贵安550025 [2]北京四方继保自动化股份有限公司,北京100085

出　　处：《电力大数据》2020年第9期66-73,共8页Power Systems and Big Data

摘　　要：为解决电热联合系统实际运行中缺:少有效易用的优化调节手段的问题,达到系统运行总体费用最小的目的,首先建立了电热联合系统优化模型,在该模型中以系统运行成本最小为目标函数,以电力网络运行约束、热力网络运行约束和电热耦合设备运行参数为约束条件;其次介绍了一种改进内点法的计算原理和内点法优化包IPOPT进行具体非线性优化问题计算时的实现方法.提出了一种基于二阶导数高精度差分通用计算公式的改进内点法的优化算法。为验证该优化算法的有效性,使用两个电热联合系统算例进行仿真计算。计算结果与原始内点法计算结果进行对比分析,验证了本文提出的这种优化方法的可行性.本文方法不再需要推导具体求解问题的精确二阶导数计算公式,具有计算简单易于工程应用的特点。In order to solve the problem of lack of effective and easy-to-use optimal adjustment means in the actual operation of the electric thermal combined system and achieve the purpose of minimizing the total operation cost of the system,an optimization model of the combined electric thermal system is established.In this model,firstly,the minimum operation cost of the system is taken as the objective function,and the operation constraints of the power network,the operation constraints of the thermal network and the operation parameters of the electric heating coupling equipment are taken as the constraints.Secondly,the calculation principle of an improved interior point method and the implementation method of the interior point method optimization package IPOPT in the calculation of specific nonlinear optimization problems were to be introduced.An improved interior point method(IPM)based on the high precision difference general formula of second derivative was proposed.In order to verify the effectiveness of the optimization algorithm,two examples of electric thermal combined system are used for simulation calculation.The results are compared with the original interior point method,which verifies the feasibility of the proposed optimization method.This method does not need to derive the exact second derivative formula to solve the problem.It is simple and easy to be applied in engineering.

关 键 词：电热联合系统 内点法 最优潮流 优化算法 二阶导数 

分 类 号：TK0[动力工程及工程热物理]